Hi, I'm intending covering a ' porch' area of approx 5m x 0.8m with hollow soffit board fixed lengthways to suitably spaced battens on top of the existing cement board. Because of the soffit board length and it's flexibility I would appreciate any hints on how to insert the soffit board , firstly , into the j trim fixed at the wall and then followed by subsequent board's tongues groves fittings.
Many thanks in advance.
Many thanks in advance.